Tempers are flaring in Haiti, Egypt and elsewhere around the world as grain prices rise out of reach. Haiti’s prime minister was fired Saturday and the government introduced a rice subsidy aimed at defusing the hungry rage that has triggered violence and looting.A scarcity of supply is one of the main reasons for the price increase, and the move to replace fossil fuels – which contribute to global warming – with “cleaner” biofuels is one of the key factors in making food scarcer. The move to biofuels has increased the demand and price for biofuel sources, including corn, wheat and soybeans, and monopolizes on land used to grow other food products.